I recently started using musicbee wifi sync. It does a great work for transferring songs from MB. But reverse syncing of playcounts and ratings doesn't seem to work. I've tried it on two devices, Android 8 and Android 10, so the problem isn't an OS-dependent issue. These are error logs. Any help appreciated.
2021-03-14: SOV33; 8.0.0; 2.1
21:35:21: startSync: preview=true,iteration=0
21:35:21: command: action=SYNC_START
21:35:21: tryStart: connecting /192.168.0.7, attempt=0
21:35:21: tryStart: connected
21:35:21: tryStart: hello=true,fromMB=false,custfiles=false,preview=true,dev=SOV33,2
21:35:21: storage: path=/storage/0123-4567,root=0123-4567:,uri=content://com.android.externalstorage.documents/tree/0123-4567%3A
21:35:21: syncDevice: root=/storage/0123-4567,ignoreErrors=false,playlists=false,ratings=true,playcount=false
21:35:21: syncDevice: command=SendStats
21:35:21: sendStats: Unable to retrieve stats for player: 1
21:35:21: syncDevice: command=GetFiles
21:35:21: getFiles: Get: Music/,url=/storage/0123-4567/Music/, inc=true
21:35:21: getFiles: count=542
21:35:21: syncDevice: command=GetFiles
21:35:21: getFiles: Get: Music/Podcasts/,url=/storage/0123-4567/Music/Podcasts/, inc=true
21:35:21: getFiles: count=0
21:35:21: syncDevice: command=ShowPreviewResults
21:35:21: syncDevice: exit
2021-03-14: SOV43; 10; 2.0.0
23:15:27: startSync: preview=true,iteration=0
23:15:27: command: action=SYNC_START
23:15:27: tryStart: connecting /192.168.0.7, attempt=0
23:15:28: tryStart: connected
23:15:28: tryStart: hello=true,fromMB=false,custfiles=false,preview=true,dev=SOV43,2
23:15:28: storage: path=/storage/6665-3663,root=6665-3663:,uri=content://com.android.externalstorage.documents/tree/6665-3663%3A
23:15:28: syncDevice: root=/storage/6665-3663,ignoreErrors=false,playlists=false,ratings=true,playcount=false
23:15:28: syncDevice: command=SendStats
23:15:38: sendStats: Unable to retrieve stats for player: 1
23:15:38: syncDevice: command=GetFiles
23:15:38: getFiles: Get: Music/,url=/storage/6665-3663/Music/, inc=true
23:15:38: getFiles: count=1817
23:15:38: syncDevice: command=GetFiles
23:15:38: getFiles: Get: Music/Podcasts/,url=/storage/6665-3663/Music/Podcasts/, inc=true
23:15:38: getFiles: count=0
23:15:38: syncDevice: command=ShowPreviewResults
23:15:38: syncDevice: exit

I have the unlocked version of GoneMad and stats.xml is generated(/storage/emulated/0/gmmp/stats.xml). I think musicbee wifi sync can't find it on certain devices. How about allowing users to specify a statistics file using the file picker?